<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>hello world</title>
    <style>
    </style>
  </head>
  <body>
      <video controls="controls">
          <source src="./movie/trailer_test.mp4" type="video/mp4">
          <source src="./movie/movie.mp4" type="video/mp4">
      </video>
      你好世界
  </body>
</html>
